1. Chapter 25 – The Moon Section 25.1
Astronomy
The study of the universe

2. Origin of the moon
A planet-sized object impacted/collided with Earth Moon’s is made of same materials as Earth’s Crust Moon has a core – more dense materials at the core, less dense materials on the surface

3. Moon’s Surface
Meteoroids(icy/rocky fragments in space) impacted the moon, leaving craters Craters are depressions in Earth’s Surface

4. Most all impacts are from micrometeoroids (very, very small) about the size of a sand grain
The moon today

5. Moon’s Structure
Iron Core, partially molten area around the core, surrounds by a solid region and a crust
Density is 3.3g/cm3 whereas Earth is 5.5g/cm3. Therefore, the moon formed from mostly crust materials from Earth

7. Moon Properties
We only see the front side of the moon
The moon rotates on its axis at the same period that it make one complete orbit around the Earth

8. Features of the Moon Maria
Rille
Lunar (moon) highlands
Regolith
dark areas (latin for Sea) Not water but actually dark basalt rock
Trench-like valleys
Areas of Lighter colored rock - breccia
Lunar soil